Im not going to get into the Male Gaze elements of the Waifu trend, though there is certainly an element to these collectables that rubs some of the community the wrong way
Like most Pokmon cards, the value of Absol depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Secret Wonders)
If you can afford it or have some way to reduce its cost, then you have a solid defense against many strategies
White has an answer for just about every strategy, and because of this is a tempting color to include whenever considering a new deck to play
Then, if it's your turn, by trashing the bottom face-down card from under any of your Tamers, you may play or use 1 [Glowing Dawn] trait card from your hand with the cost reduced by 3